Digestion method of marine organisms for determination of total arsenic by atomic absorption spectrometry.

Abstract

A wet digestion method adding nickel ion for the determination of total arsenic in marine organisms was evaluated from the characteristics of arsenic in graphite furnace atomic absorption spectrometry. The necessity of an addition of nickel ion in a wet digestion process could not be confirmed in any case examined. The concentrations of arsenic in marine organisms determined by graphite furnace and arsine generation atomic absorption spectrometry after digested with nitric acid, perchloric acid and sulfuric acid were in good agreement with each other. The accuracy of each method was studied by analyzing NBS SRM 1566 oyster tissue.